docs: def createReaderUser(self,accessibleBundles=None):
          """Creates a new reader user with access to the specified bundle Ids"""
  
          url = self.__serviceAccount.get_url() + '/' + \
                self.__serviceAccount.get_instance_id()+ '/v2/users/new'
  
          headers = {'content-type': 'application/json'}
          data = {}
          data['type'] = 'READER'
          if accessibleBundles is not None:
              data['bundles']=accessibleBundles
          json_data = json.dumps(data)
          response = self.__perform_rest_call(requestURL=url, restType='POST', body=json_data, headers=headers)
          return response